Stun gun



FIG. 1 is a front perspective view of a stun gun, showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof, the bottom plan view being a mirror image thereof; and,

FIG. 4 is a left-side elevational view thereof, the right-side elevational view being a mirror image thereof.

The broken lines showing a remaining portion of a stun gun depict environmental matter, and form no part of the claimed design. 

CLAIM We claim the ornamental design for a stun gun, as shown and described. 